Implement subcomment trees, replies to subcomments

templates/comments.html

@@ -0,0 +1,15 @@
+{% extends 'base.html' %}
+{% from 'comment.html' import render_comment, reply %}
+
+{% block content %}
+<sup><a href="{{ url_for('thread', thread_id = thread_id) }}">thread</a></sup>
+{% if parent_id %}
+<sup><a href="../{{ parent_id }}">parent</a></sup>
+{% endif %}
+
+{{ reply() }}
+
+{% for c in comments %}
+{{ render_comment(c) }}
+{% endfor %}
+{% endblock %}